CN1919716A

CN1919716A - Filling apparatus for liquid bottle filler

Info

Publication number: CN1919716A
Application number: CN 200610041429
Authority: CN
Inventors: 房国荣; 尹奋中; 王玉苏; 陆金荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-08-31
Filing date: 2006-08-31
Publication date: 2007-02-28

Abstract

The invention discloses a filling device of liquid bottler, which comprises the following parts: servo motor, declaration motor, fixing board, screw rod, nut and two bottle cylinders, wherein two bottle cylinders and declaration machine are set on the fixed board on two sides of declaration symmetrically, which is assembled on the rack, the bottom of piston rod of bottle cylinder is fixed on the elevation board, the servo motor connects declaration machine, the upper end of screw rod connects output shaft of declaration machine, the lower end of screw rod is set in the bearing seat through bearing, the bearing seat is fixed on the rack with nut on the elevation board to connect screw rod rotatably.

Description

The device for filling of liquid-filling machine

Technical field:

The present invention relates to liquid-filling machine, relate in particular to the device for filling of piston type liquid bottle placer.

Background technology:

In existing piston formula liquid-filling machine, no matter single head bottle placer, or multiple head filling machine, its liquid filling device all adopts air pressure to drive, promptly drive the can cylinder and twitch back and forth, realize the filling of liquid material, its structural principle such as attached illustrated in figures 1 and 2 by cylinder.Its principle of work is: cylinder piston 12 is moving back and forth in cylinder block 11 under the effect of air pressure in the cylinder 1, cylinder piston rod 13 links to each other with piston 22 in the can cylinder 2, piston 22 is reciprocating with cylinder piston rod 13, the right-hand member of can cylinder 2 is connected to input and output material triple valve 3, in input and output material triple valve 3, be provided with suction check valve 31 and discharging check valve 32, when piston 22 is moved to the left, suction check valve 31 is opened, liquid to be filled sucks in the can cylinder 2 from feed hose 33, in this process, discharging check valve 32 is in closed condition; When piston 22 moved right, suction check valve 31 was in closed condition, and discharging check valve 32 is in open mode, and liquid pressurized to be filled extrudes from discharging flexible pipe 34 in the can cylinder 2, thereby finished the filling of material.The volume of expendable is to be determined by the stroke of piston 22, under the identical condition of piston 22 diameters, the stroke of piston 22 is directly proportional with the can volume, change the can specification, the movement travel of necessary adjusting piston 22, and the movement travel of piston 22 is to be determined by the distance that two

magnetic switch

14,15 are installed, moving magnetic switch 15 is picked up signal by sensing the magnetic field that is arranged on the magnet ring on the cylinder piston 12, control solenoid directional control valve by control circuit again, the advancing and move back of control cylinder piston rod 12.Give birth to the stroke that the distance of 13 on switch changes can hydraulic cylinder piston 22 by regulating two magnetic, to reach the requirement of regulating filling dosage.Accompanying drawing 1 is the structural representation of single head can, for multiple head filling machine, its principle of work is identical, only the single head can duplicating and superposeing, as long as be equipped with buffer bin and load-transfer device, all feed hose 33 are all communicated with buffer bin 35, then can realize the bull auto-filling, existing piston formula bottle placer, all there are following deficiency in single head or bull fill-type bottle placer:

1. filling velocity is single, when charging quantity during near full bottle, is irritated liquid and is easy to generate foam and overflows from bottleneck, overcome this shortcoming and can only reduce filling velocity, makes that can inefficiency, the productive capacity of complete machine can't obtain bringing into play.

2. the filling accuracy rate is not high, since the pneumatic type bottle placer with pressed gas as propulsion source, and gas has compressible characteristic, when air pressure fluctuation is big, cylinder piston detects signal piston from magnetic switch and commutates to electromagnetic valve in the process of advancing, the whole stroke that piston returns will change, and cause filling dosage also to change thereupon, thereby have influence on the stable of filling dosage.

When 3. regulating filling dosage (as changing the filling specification), distance between all essential manual change's two

magnetic switch

14,15, and each filling specification adjustment all must can reach requirement by repeatedly trying to irritate, not only debugging trouble, and the Charge waste is a lot, for multiple head filling machine, the adjustment time is longer, trouble more.

Summary of the invention:

In order to overcome pneumatic type device for filling above shortcomings in the existing piston type liquid bottle placer, goal of the invention of the present invention provides a kind of device for filling of liquid-filling machine, it can preestablish different filling velocities according to different liquids, realize speed change filling can, in filling fast originally, low speed filling when near end produces foam and overflows in the time of can preventing filling, can bring into play the productive capacity of complete machine again.

The device for filling of liquid-filling machine of the present invention, comprise servomotor 4, reductor 5, adapter plate 6, screw mandrel 7, nut 8 and two can cylinders 2, two can cylinders 2 wherein, reductor 5 is installed on the adapter plate 6, adapter plate 6 is installed on the frame, and two can cylinders 2 are distributed in the both sides of reductor 5 symmetrically, the lower end of the piston rod 21 of can cylinder 2 is fixed on the lifter plate 9, servomotor 4 and reductor 5 direct connections, the upper end of screw mandrel 7 links to each other with the output shaft of reductor 5, but be installed in the bearing seat 10 to the lower end rotation of screw mandrel 7, bearing seat 10 is fixed on the frame, and nut 8 spins on the screw mandrel 7, and is fixed on the lifter plate 9.

Because the piston 22 of two can cylinders 2 is driven by ball screw nut mechanism by servomotor 4, reductor 5, servomotor 4 drives ball screw 7 through reductor 5 and rotates, thereby drive nut 8 liftings, because of nut 8 is fixed on the lifter plate 9, the lifting of lifter plate 9 must drive piston rod 21 liftings of two can cylinders 2, thereby finishes the suction and the filling of material.Because the running velocity of servomotor 4 can be regulated arbitrarily within the specific limits, according to the filling process requirement, when initial fill, can fill can fast, should carry out the low speed can in the can later stage (when filling bottle is soon filled), servomotor 4 can preestablish rotating speed in the course of the work, when initial fill, be set at a high speed, convert low speed in the can later stage, the filling device of this spline structure can fundamentally guarantee the filling accuracy of two can cylinders 2, can improve can efficient to greatest extent, can guarantee that again the can later stage can not bubble excessive; In the time will changing package specification, as long as adjust the rotation number of turns of servomotor 4, do not need every can cylinder 2 of open water test, there is not the waste problem of can liquid.

Description of drawings:

Fig. 1 is the structural representation of existing filling apparatus;

Fig. 2 is the schematic diagram of input and output material triple valve among Fig. 1;

Fig. 3 is a structural representation of the present invention;

Among the figure: the 1-cylinder; The 11-cylinder block; The 12-cylinder piston; The 13-cylinder piston rod; 14-decides magnetic and gives birth to switch; The moving magnetic of 15-is given birth to switch; 2-can cylinder; The 21-piston rod; The 22-piston; 3-input and output material triple valve; 31-suction check valve; 32-discharging check valve; The 33-feed hose; 34-discharging flexible pipe; The 35-buffer bin; The 4-servomotor; The 5-reductor; The 6-adapter plate; The 7-screw mandrel; The 8-nut; The 9-lifter plate; The 10-bearing seat.

The specific embodiment:

Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing 3:

The device for filling of liquid-filling machine of the present invention, by servomotor 4, reductor 5, adapter plate 6, screw mandrel 7, nut 8 and two can cylinders 2, two can cylinders 2 wherein, reductor 5 is installed on the adapter plate 6, adapter plate 6 is fixedly mounted on the frame, and two can cylinders 2 are distributed in the both sides of reductor 5 symmetrically, the lower end of the piston rod 21 of can cylinder 2 is fixed on the lifter plate 9, servomotor 4 and reductor 5 direct connections, described screw mandrel 7 is a ball screw, the upper end of ball screw links to each other with the output shaft of reductor 5, the lower end of ball screw by bearing installation in bearing seat 10, bearing seat 10 is fixed on the frame, and nut 8 is screwed on the ball screw and is fixed on the lifter plate 9.

Though only contain two can cylinders in this device for filling, it is a basic device for filling unit, needs only several this device for filling unit of installing for multiple head filling machine more.

Claims

1, a kind of device for filling of liquid-filling machine, it is characterized in that: it comprises servomotor (4), reductor (5), adapter plate (6), screw mandrel (7), nut (8) and two can cylinders (2), two can cylinders (2) wherein, reductor (5) is installed on the adapter plate (6), adapter plate (6) is fixed on the frame, and two can cylinders (2) are distributed in the both sides of reductor (5) symmetrically, the lower end of the piston rod (21) of can cylinder (2) is fixed on the lifter plate (9), servomotor (4) and reductor (5) direct connection, the upper end of screw mandrel (7) links to each other with the output shaft of reductor (5), the lower end of screw mandrel (7) by bearing installation in bearing seat (10), bearing seat (10) is fixed on the frame, nut (8) is fixed on the lifter plate (9), and nut (8) spins with screw mandrel (7).

2, according to the device for filling of the described liquid-filling machine of claim 1, it is characterized in that: described screw mandrel (7) is a ball screw, its lower end by bearing installation in bearing seat (10).